F10 High

Boiler Fault Code F10

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code F10 appears across 7 boiler brands and 44 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected that its temperature sensors are incorrectly placed or wired, preventing it from calculating how much heat is being delivered to your home. (As reported on Glow-worm Xtramax HE)

Pick your boiler brand for the F10 fix

Ferroli F10 14 models Glow-worm F10 10 models Heatline F10 9 models Ideal F10 3 models Intergas F10 3 models Saunier Duval F10 3 models Vaillant F10 2 models

Source

Information for the F10 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026